/*
  MIT License http://www.opensource.org/licenses/mit-license.php
  Author Tobias Koppers @sokra
*/
"use strict";

const ConcatSource = require("webpack-sources").ConcatSource;

class JsonpChunkTemplatePlugin {
  apply(chunkTemplate) {
    chunkTemplate.plugin("render", function(modules, chunk) {
      const jsonpFunction = this.outputOptions.jsonpFunction;
      const source = new ConcatSource();
      source.add(`global.${jsonpFunction}(${JSON.stringify(chunk.ids)},`);
      source.add(modules);
      const entries = [chunk.entryModule].filter(Boolean).map(m => m.id);
      if(entries.length > 0) {
        source.add(`,${JSON.stringify(entries)}`);
      }
      source.add(")");
      return source;
    });
    chunkTemplate.plugin("hash", function(hash) {
      hash.update("JsonpChunkTemplatePlugin");
      hash.update("3");
      hash.update(`${this.outputOptions.jsonpFunction}`);
      hash.update(`${this.outputOptions.library}`);
    });
  }
}
module.exports = JsonpChunkTemplatePlugin;